CN104863177A - Composite retaining wall structure and construction method thereof - Google Patents
Composite retaining wall structure and construction method thereof Download PDFInfo
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- CN104863177A CN104863177A CN201510318413.9A CN201510318413A CN104863177A CN 104863177 A CN104863177 A CN 104863177A CN 201510318413 A CN201510318413 A CN 201510318413A CN 104863177 A CN104863177 A CN 104863177A
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Abstract
Provided are a composite retaining wall structure and a construction method thereof. The composite retaining wall structure comprises a row or more than two rows of parallel facade drilled filling piles or supporting piles (1), a group of spinning jetting piles (2) arranged among adjacent facade drilled filling piles or the supporting piles and horizontally or obliquely inserted into the side wall or side slope of a foundation pit, prefabricated reinforced concrete square piles (3) inserted with the spinning jetting piles, a group of waist beams (6) horizontally connected with the facade drilled filling piles or the supporting piles at different heights and arranged on the extending ends of the prefabricated reinforced concrete square piles in a sleeving mode, and top beams (5) connected to the tops of the facade drilled filling piles or the supporting piles. A spinning jetting solidification body can be tightly engaged with a soil body behind the piles, the prefabricated reinforced concrete square piles can be connected with all spinning jetting solidification body sections together, the stability and rigidity of the row-pile retaining wall structure can be effectively improved, pile displacement in the excavating process of the foundation pit can be effectively controlled, and the safety of the foundation pit can be ensured.
Description
Technical field
The present invention relates to architecture Foundation Pit Engineering and slope project technical field.
Background technology
21 century is the epoch that geotechnical engineering develops on a large scale.Along with the iterative method of Urbanization in China, geotechnical engineering field is rapidly developed, and all kinds of base pit engineering and slope project emerge in large numbers thereupon.For base pit engineering and slope project, retaining wall structure is all crucial.In recent years, piling structure because of its supporting effect good, easy construction is quick, and the advantages such as construction costs is low, are widely used in pattern foundation pit supporting structure and slope support engineering.But for some deep-foundation pit engineering or extra-high, conventional campshed retaining wall structure usually can face pile body and be out of shape excessive problem, and the safety of engineering exists potential threat.
Summary of the invention
The object of the invention is to overcome the deficiency of Row Piles Supporting Structure in deep-foundation pit engineering, provide a kind of and effectively can control the pile body shifting of Row Piles Supporting Structure in Deep Excavation, and improve combined type retaining wall structure and the construction method thereof of its stability.
Object of the present invention is achieved through the following technical solutions:
A kind of combined type retaining wall structure, include a row or the above parallel facade bored pile of two rows or soldier pile, to be arranged between each adjacent bored pile or soldier pile and level or tilt to insert foundation pit side-wall or side slope one group of rotary churning pile, insert rotary churning pile Prefabricated Reinforced Concrete Square Pile, be enclosed within one group of waist rail on Prefabricated Reinforced Concrete Square Pile stretched head at differing heights lateral connection bored pile or soldier pile, be connected to the Guan Liang at facade bored pile or soldier pile top.
Rotary churning pile of the present invention is the sectional type churning post that the continuous type churning post that obtains of sequential production or section construction obtain.The afterbody of rotary churning pile is the enlarged footing anchoring body that churning diameter increases.Described Prefabricated Reinforced Concrete Square Pile is solid pile, and it is long identical with rotary churning pile or be slightly longer than rotary churning pile.Described rotary churning pile can select equidistant between bored pile or soldier pile stake or unequal-interval ground is arranged continuously or interval is arranged.The diameter of the most thin segment of rotary churning pile should be greater than the Prefabricated Reinforced Concrete Square Pile cross section length of side at least 20mm.
The construction method of combined type retaining wall structure of the present invention is as follows:
A. pile-forming machine perching, carries out bored pile or soldier pile construction;
B. after bored pile or soldier pile quality tend towards stability, carry out excavation of foundation pit, cement-silicate slurries are used for level or the inclination mortar depositing construction of rotary churning pile by pre-configured cement-silicate slurries in digging process after foundation ditch digs design attitude;
C., after rotary churning pile mortar depositing construction, before the slurry of i.e. slip casting solidifies completely before its pile quality is stablized, carry out Prefabricated Reinforced Concrete Square Pile piling construction, Prefabricated Reinforced Concrete Square Pile is squeezed in rotary churning pile;
D., after the rotary churning pile of sustained height layer and Prefabricated Reinforced Concrete Square Pile construction, building of waist rail is carried out;
E., after all waist rail is built, building of bored pile or soldier pile top Guan Liang is carried out.
The present invention, when carrying out the mortar depositing construction of step b, increases the churning diameter of rotary churning pile afterbody, forms enlarged footing anchoring body.Rotary churning pile adopts section rotary spraying construction or continuous rotary-spraying construction, and the diameter of rotary churning pile is 0.6 ~ 1.2m, and stake is long is not less than 6m; Sublevel interval during section rotary spraying construction is 1 ~ 2m.The injecting paste material of rotary churning pile is cement-silicate slurries, namely mixes the combined casting material of water glass in cement grout, and wherein, the water/binder ratio of cement grout is 0.75:1 ~ 1:1, and water glass incorporation is 2% ~ 4% of cement grout quality.
Combined type retaining wall structure of the present invention, its churning induration closely can be engaged with the soil body after stake, and each section of churning induration can link together by precast reinforced concrete pile, effectively can increase stability and the rigidity of campshed retaining wall structure, pile body shifting in effective control Excavation Process, ensures deep pit monitor.Bored pile, rotary churning pile and enlarged footing anchoring body, Prefabricated Reinforced Concrete Square Pile, Guan Liang and waist rail be combined with each other and restrict, and form a firm three-dimensional soil-baffling structure, Stability Analysis of Structures is reliable.
Scientific construction of the present invention is reasonable, the enlarged footing anchoring body that the churning induration of section construction and slip casting thereof are formed can be guaranteed closely to be engaged with the soil body after stake, Prefabricated Reinforced Concrete Square Pile is squeezed in rotary churning pile, make Prefabricated Reinforced Concrete Square Pile position firm, be conducive to the firm waist rail of follow-up pouring structure and Liang Guan.
Accompanying drawing explanation
Fig. 1 is the elevational schematic view of combined type retaining wall structure of the present invention;
Fig. 2 is the schematic top plan view (rotary churning pile adopts section rotary spraying construction) of combined type retaining wall structure of the present invention;
Fig. 3 is the schematic side view (rotary churning pile adopts section rotary spraying construction) of combined type retaining wall structure of the present invention;
Fig. 4 is the schematic side view (rotary churning pile adopts continuous rotary-spraying construction) of combined type retaining wall structure of the present invention.
In figure, each label is: 1---bored pile; 2---rotary churning pile; 3---Prefabricated Reinforced Concrete Square Pile; 4---enlarged footing anchoring body; 5---Guan Liang; 6---waist rail; A---earth's surface; B---at the bottom of foundation ditch.
Detailed description of the invention
Below by drawings and Examples, the present invention is described in further detail, but protection scope of the present invention is not limited to described content.
As Figure 1-Figure 4, combined type retaining wall structure of the present invention includes a row or the parallel facade bored pile of two or more rows or soldier pile 1, be arranged at one group of rotary churning pile 2 of also level or tilt insertion foundation pit side-wall or side slope between each adjacent bored pile or soldier pile, insert the Prefabricated Reinforced Concrete Square Pile 3 of rotary churning pile 2, at differing heights lateral connection bored pile or soldier pile and the one group of waist rail 6 be enclosed within Prefabricated Reinforced Concrete Square Pile 3 stretched head, be connected to the hat beam 5 at facade bored pile or soldier pile 1 top.Rotary churning pile 2 is sequential production as shown in Figure 4 and the continuous type churning post that obtains or section construction as shown in Figure 2 and Figure 3 and the sectional type churning post that obtains, and the afterbody of rotary churning pile 2 is the enlarged footing anchoring body 4 that churning diameter increases.The diameter of the most thin segment of rotary churning pile 2 should be greater than the Prefabricated Reinforced Concrete Square Pile 3 cross section length of side at least 20mm.Prefabricated Reinforced Concrete Square Pile 3 is solid pile, and it is long basic identical with rotary churning pile 2 or be slightly longer than rotary churning pile.Rotary churning pile 2 can select equidistant between bored pile or soldier pile 1 or unequal-interval ground is arranged continuously or interval is arranged.
The construction method of combined type retaining wall structure of the present invention is as follows:
A. according to construction place exploration report and pattern foundation pit supporting structure Stability Checking result, after determining the construction parameters such as the stake position of bored pile and rotary churning pile, diameter and stake be long, pile-forming machine perching, carries out bored pile or soldier pile 1 is constructed;
B. after bored pile or soldier pile 1 quality tend towards stability, from ground Table A to underground excavation foundation ditch, cement-silicate slurries are used for level or the inclination mortar depositing construction of rotary churning pile 2 by pre-configured cement-silicate slurries in digging process after foundation ditch digs B at the bottom of design attitude and foundation ditch.Double tube method or single pipe method or tri-tube method can be adopted to carry out the section rotary spraying construction of rotary churning pile 2, and sublevel interval during section rotary spraying construction is 1 ~ 2m, and increases the churning diameter of rotary churning pile 2 afterbody, forms enlarged footing anchoring body 4; Also continuous rotary-spraying construction method can be adopted to obtain continuous type rotary churning pile 2.The diameter of rotary churning pile is 0.6 ~ 1.2m, and stake is long is not less than 6m.The injecting paste material of rotary churning pile 2 is cement-silicate slurries, namely mixes the combined casting material of water glass in cement grout, and wherein, the water/binder ratio of cement grout is 0.75:1 ~ 1:1, and water glass incorporation is 2% ~ 4% of cement grout quality;
C., after rotary churning pile mortar depositing construction, before the slurry of i.e. slip casting solidifies completely before its pile quality is stablized, carry out Prefabricated Reinforced Concrete Square Pile 3 piling construction, Prefabricated Reinforced Concrete Square Pile is squeezed in rotary churning pile 2;
D., after the rotary churning pile of sustained height layer and Prefabricated Reinforced Concrete Square Pile construction, building of waist rail 6 is carried out;
E., after all waist rail is built, building of bored pile or soldier pile 1 top hat beam 5 is carried out.
The construction of bored pile of the present invention or soldier pile, the continuous grouting construction of rotary churning pile or segmenting slip casting construction all can adopt art methods.
Claims (10)
1. a combined type retaining wall structure, it is characterized in that, include more than a row or two rows parallel facade bored pile or soldier pile (1), be arranged at one group of rotary churning pile (2) of also level or tilt insertion foundation pit side-wall or side slope between each adjacent bored pile or soldier pile, insert the Prefabricated Reinforced Concrete Square Pile (3) of rotary churning pile (2), at differing heights lateral connection bored pile or soldier pile and the one group of waist rail (6) be enclosed within Prefabricated Reinforced Concrete Square Pile (3) stretched head, be connected to the Guan Liang (5) at facade bored pile or soldier pile (1) top.
2. combined type retaining wall structure according to claim 1, is characterized in that, the continuous type churning post that described rotary churning pile (2) obtains for sequential production or section construction and the sectional type churning post obtained.
3. combined type retaining wall structure according to claim 1 and 2, is characterized in that, the afterbody of described rotary churning pile (2) is the enlarged footing anchoring body (4) that churning diameter increases.
4. the combined type retaining wall structure according to claim 1 or 2 or 3, is characterized in that, described Prefabricated Reinforced Concrete Square Pile (3) is solid pile, and it is long identical with rotary churning pile (2) or be slightly longer than rotary churning pile.
5. the combined type retaining wall structure according to claim 1 or 2 or 3 or 4, is characterized in that, described rotary churning pile (2) can select equidistant between bored pile or soldier pile (1) stake or unequal-interval ground is arranged continuously or interval is arranged.
6. the combined type retaining wall structure according to claim 1 or 2 or 3 or 4 or 5, is characterized in that: the diameter of the most thin segment of described rotary churning pile (2) should be greater than Prefabricated Reinforced Concrete Square Pile (3) the cross section length of side at least 20mm.
7. the construction method of the combined type retaining wall structure as described in any one of claim 1-6, it is characterized in that, construction method is as follows:
A. pile-forming machine perching, carries out bored pile or soldier pile (1) construction;
B. after bored pile or soldier pile (1) quality tend towards stability, carry out excavation of foundation pit, cement-silicate slurries are used for level or the inclination mortar depositing construction of rotary churning pile (2) by pre-configured cement-silicate slurries in digging process after foundation ditch digs design attitude;
C., after rotary churning pile mortar depositing construction, before the slurry of i.e. slip casting solidifies completely before its pile quality is stablized, carry out Prefabricated Reinforced Concrete Square Pile (3) piling construction, Prefabricated Reinforced Concrete Square Pile is squeezed in rotary churning pile (2);
D., after the rotary churning pile of sustained height layer and Prefabricated Reinforced Concrete Square Pile construction, building of waist rail (6) is carried out;
E., after all waist rail is built, building of bored pile or soldier pile (1) top Guan Liang (5) is carried out.
8. the construction method of combined type retaining wall structure according to claim 7, is characterized in that, when carrying out the mortar depositing construction of step b, increases the churning diameter of rotary churning pile (2) afterbody, forms enlarged footing anchoring body (4).
9. the construction method of the combined type retaining wall structure according to claim 7 or 8, is characterized in that, described rotary churning pile (2) adopts section rotary spraying construction or continuous rotary-spraying construction, and the diameter of rotary churning pile is 0.6 ~ 1.2m, and stake is long is not less than 6m; Sublevel interval during section rotary spraying construction is 1 ~ 2m.
10. the construction method of the combined type retaining wall structure according to claim 7 or 8 or 9, it is characterized in that, the injecting paste material of described rotary churning pile (2) is cement-silicate slurries, namely the combined casting material of water glass is mixed in cement grout, wherein, the water/binder ratio of cement grout is 0.75:1 ~ 1:1, and water glass incorporation is 2% ~ 4% of cement grout quality.
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| CN201510318413.9A CN104863177A (en) | 2015-06-11 | 2015-06-11 | Composite retaining wall structure and construction method thereof |
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| CN201510318413.9A CN104863177A (en) | 2015-06-11 | 2015-06-11 | Composite retaining wall structure and construction method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464079A (en) * | 2015-12-24 | 2016-04-06 | 李金良 | Forming construction method of long-spiral pore-forming pile-slab-pile supporting and anti-seepage continuous wall |
| CN105804101A (en) * | 2016-05-16 | 2016-07-27 | 陈静波 | Load-reducing retaining system capable of reducing stress of retaining structure, construction method and applications |
| CN107419730A (en) * | 2017-07-07 | 2017-12-01 | 中国建筑第八工程局有限公司 | With reference to the pattern foundation pit supporting structure water-retaining structure and method of High-pressure Spiral Spray Technology |
| CN109914432A (en) * | 2019-04-12 | 2019-06-21 | 四川省交通勘察设计研究院有限公司 | A kind of execavated rockmass pre-reinforcement piling wall supporting construction and method |
| CN109972634A (en) * | 2019-05-05 | 2019-07-05 | 北京万兴建筑集团有限公司 | A kind of piping lane open-cut foundation ditch side wall earth-retaining method for crossing branch line pipe trench |
| CN115198762A (en) * | 2022-07-22 | 2022-10-18 | 中建一局集团第二建筑有限公司 | Supporting structure next to existing building foundation pit and construction method thereof |
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| JP2006291575A (en) * | 2005-04-11 | 2006-10-26 | Kanuka Design:Kk | Retaining wall and method of constructing the same |
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| JP2006291575A (en) * | 2005-04-11 | 2006-10-26 | Kanuka Design:Kk | Retaining wall and method of constructing the same |
| CN202610808U (en) * | 2012-03-15 | 2012-12-19 | 十九冶成都建设有限公司 | Press-anchor-restrict method foundation pit retaining structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464079A (en) * | 2015-12-24 | 2016-04-06 | 李金良 | Forming construction method of long-spiral pore-forming pile-slab-pile supporting and anti-seepage continuous wall |
| CN105804101A (en) * | 2016-05-16 | 2016-07-27 | 陈静波 | Load-reducing retaining system capable of reducing stress of retaining structure, construction method and applications |
| CN107419730A (en) * | 2017-07-07 | 2017-12-01 | 中国建筑第八工程局有限公司 | With reference to the pattern foundation pit supporting structure water-retaining structure and method of High-pressure Spiral Spray Technology |
| CN109914432A (en) * | 2019-04-12 | 2019-06-21 | 四川省交通勘察设计研究院有限公司 | A kind of execavated rockmass pre-reinforcement piling wall supporting construction and method |
| CN109972634A (en) * | 2019-05-05 | 2019-07-05 | 北京万兴建筑集团有限公司 | A kind of piping lane open-cut foundation ditch side wall earth-retaining method for crossing branch line pipe trench |
| CN115198762A (en) * | 2022-07-22 | 2022-10-18 | 中建一局集团第二建筑有限公司 | Supporting structure next to existing building foundation pit and construction method thereof |
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Address after: 650501 Yunnan city of Kunming Province Economic and Technological Development Zone Forest Road No. 188 Applicant after: YCIH FOUNDATION ENGINEERING CO.,LTD. Applicant after: YUNNAN CONSTRUCTION ENGINEERING GROUP Co.,Ltd. Address before: 650501 Yunnan city of Kunming Province Economic and Technological Development Zone Forest Road No. 188 Applicant before: YUNNAN CONSTRUCTION ENGINEERING FOUNDATION ENGINEERING CO.,LTD. Applicant before: YUNNAN CONSTRUCTION ENGINEERING GROUP Co.,Ltd. |
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Effective date of registration: 20170524 Address after: 650501 Yunnan city of Kunming Province Economic and Technological Development Zone Forest Road No. 188 Applicant after: YCIH FOUNDATION ENGINEERING CO.,LTD. Applicant after: Yunnan Construction Investment Holding Group Co., Ltd. Address before: 650501 Yunnan city of Kunming Province Economic and Technological Development Zone Forest Road No. 188 Applicant before: YCIH FOUNDATION ENGINEERING CO.,LTD. Applicant before: YUNNAN CONSTRUCTION ENGINEERING GROUP Co.,Ltd. |
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Application publication date: 20150826 |